usb: eth: enable AX88179 DRIVER for ARNDALE 5250

Patch enables AX88179 driver for ARNDALE 5250

Signed-off-by: Rene Griessl <rgriessl@cit-ec.uni-bielefeld.de>
diff --git a/include/configs/arndale.h b/include/configs/arndale.h
index 81e8a7c..d68993b 100644
--- a/include/configs/arndale.h
+++ b/include/configs/arndale.h
@@ -27,6 +27,7 @@
 #define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS	3
 #define CONFIG_USB_HOST_ETHER
 #define CONFIG_USB_ETHER_ASIX
+#define CONFIG_USB_ETHER_ASIX88179
 
 /* MMC SPL */
 #define CONFIG_EXYNOS_SPL